In Silico Investigation of Intracranial Blast Mitigation with Relevance to Military Traumatic Brain Injury
MASSACHUSETTS INST OF TECH CAMBRIDGE INSTITUTE FOR SOLDIER NANOTECHNOLOGIES (ISN)
Pagination or Media Count:
Blast-induced traumatic brain injury is the most prevalent military injury in Iraq and Afghanistan, yet little is known about the mechanical effects of blasts on the human head, and still less is known about how personal protective equipment affects the brains response to blasts. In this study we investigated the effect of the Advanced Combat Helmet ACH and a conceptual face shield on the propagation of stress waves within the brain tissue following blast events. We used a sophisticated computational framework for simulating coupled fluid-solid dynamic interactions and a three-dimensional biofidelic finite element model of the human head and intracranial contents combined with a detailed model of the ACH and a conceptual face shield. Simulations were conducted in which the unhelmeted head, head with helmet, and head with helmet and face shield were exposed to a frontal blast wave with incident overpressure of 10 atm. Direct transmission of stress waves into the intracranial cavity was observed in the unprotected head and head with helmet simulations.
- Anatomy and Physiology
- Medicine and Medical Research
- Ammunition and Explosives